Selective CO 2 reduction on topological Chern magnet TbMn 6 Sn 6 .

As a new type of topological magnet, TbMn 6 Sn 6 has a planar Mn kagome lattice with out-of-plane magnetic moments. Previous studies have found spin-polarized Chern gapped Dirac fermions in TbMn 6 Sn 6 , which are advantageous to topological catalysis. In this study, we theoretically demonstrate that the TbMn 6 Sn 6 (001) surface is favorable for CO 2 reduction. The stability of different surface types is investigated, and then the reaction paths of CO 2 reduction on the surfaces are revealed to prove that the product is selective. This work reveals the effect of magnetic topological materials on CO 2 reduction.